Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2003-10-10
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
We develop a general numerical method aimed at studying particle production from vacuum states in a variety of settings. As a first example we look at particle production in a simple cosmological model. We apply the same approach to the dynamical Casimir effect, with special focus on the case of an oscillating mirror. We confirm previous estimates and obtain long-time production rates and particle spectra for both resonant and off-resonant frequencies. Finally, we simulate a system with space and time-dependent optical properties, analogous to a one-dimensional expanding dielectric bubble. We obtain simple expressions for the dependence of the final particle number on the expansion velocity and final dielectric constant.
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